package com.adou.d1;

public class TypeDemo {
    public static void main(String[] args) {

        Long l = 100L;// 默认字面量整型

        float f = 9.8F;//字面量默认doube

        char c = '中';

        boolean b = true;

        // 引用数据类型
        String str = "abcd";

        byte by = 12;
        int i = by;



    }
}
